Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NPP and GCOM-C Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 10/14/2025
Index Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Date (GCOM-C) Time (GCOM-C) Lat,Lon (GCOM-C) SZA (GCOM-C ) Distance(km) Time Diff (sec)
1 10/19/2025 05:19:54 69.53, 97.90 79.50 10/19/2025 05:21:03 69.46, 99.35 79.45 57.17 69
2 10/19/2025 06:10:29 -69.04, -94.10 100.97 10/19/2025 06:11:41 -69.02, -93.88 100.99 9.01 72
3 10/19/2025 07:01:13 68.94, 73.35 78.94 10/19/2025 07:02:10 68.92, 73.36 78.92 2.87 57
4 10/19/2025 07:51:56 -68.88,-119.26 101.10 10/19/2025 07:52:40 -68.91,-119.27 101.08 3.01 44
5 10/19/2025 08:42:42 68.89, 48.05 78.92 10/19/2025 08:43:08 68.86, 48.05 78.89 3.36 26
6 10/19/2025 09:33:25 -68.83,-144.56 101.13 10/19/2025 09:33:38 -68.85,-144.58 101.11 2.57 13
7 10/19/2025 10:24:11 68.84, 22.74 78.89 10/19/2025 10:24:05 68.86, 22.81 78.91 3.45 6
8 10/19/2025 11:14:54 -68.78,-169.86 101.16 10/19/2025 11:14:36 -68.80,-169.89 101.14 2.23 18
9 10/19/2025 12:05:40 68.79, -2.56 78.87 10/19/2025 12:05:03 68.80, -2.50 78.88 2.83 37
10 10/19/2025 12:56:23 -68.73, 164.83 101.18 10/19/2025 12:55:34 -68.74, 164.79 101.17 2.02 49
11 10/19/2025 13:47:09 68.73, -27.87 78.84 10/19/2025 13:46:01 68.74, -27.82 78.85 2.26 68
12 10/19/2025 14:37:49 -68.52, 139.74 101.36 10/19/2025 14:36:35 -68.52, 139.27 101.37 19.13 74
13 10/19/2025 15:28:22 67.82, -52.06 77.98 10/19/2025 15:27:15 67.82, -54.23 77.93 91.03 67

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 10/14/2025
SNOs_Map_NPP_GCOM-C_20251015.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 10/14/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C